Null Modem Cable; Pc-At Serial Cable - 3Com SuperStack 3 Getting Started Manual
Switch 4200 family 26/50/28 port
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Also See for SuperStack 3:
- Administrator's manual (496 pages) ,
- Quick reference manual (16 pages) ,
- Product manual (14 pages)
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B
Null Modem Cable
PC-AT Serial Cable
P
-
IN
OUTS
9-pin to RS-232 25-pin
Switch 4200
Cable connector: 9-pin female
Screen
Shell
TxD
3
RxD
2
Ground
5
RTS
7
CTS
8
DSR
6
DCD
1
DTR
4
9-pin to 9-pin
Switch 4200
Cable connector: 9-pin female
Screen
Shell
DTR
4
TxD
3
RxD
2
CTS
8
Ground
5
DSR
6
RTS
7
DCD
1
PC/Terminal
Cable connector: 25-pin male/female
Screen
1
3
RxD
TxD
2
Ground
7
4
RTS
20
DTR
5
CTS
6
DSR
8
DCD
PC-AT Serial Port
Cable connector: 9-pin female
Screen
Shell
1
DCD
2
RxD
3
TxD
4
DTR
5
Ground
DSR
6
RTS
7
8
CTS
only required if screen
always required
required for handshake
only required if screen
Required for handshake
always required
required for handshake
always required
required for handshake
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